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Finding the Fourth Proportional to 564.84, 779.04 and 408.06

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Solution

The fourth proportional to 564.84, 779.04 and 408.06 is: 562.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    564.84 : 779.04 = 408.06 : x
  2. Step 2: Convert to fraction form
    564.84/779.04 = 408.06/x
  3. Step 3: Cross multiply
    564.84x = 779.04 × 408.06
  4. Step 4: Simplify right side
    564.84x = 317,895.06
  5. Step 5: Solve for x
    x = 317,895.06/564.84
  6. Step 6: Final answer
    x = 562.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.